General Chemistry Answers

Colligative property depends upon number of solute of particles present in the solution.

The higher the number of solute particles, the greater the change of colligative properties.

water has much higher boiling point than ethanol because of the weaker H bonding between atom

What is the Mr of MgO?

How many moles of ammonium sulfate contain 6.0×10²⁵ atoms of N

N?

240 dm³ of air at s.t.p is compressed to 17 atmospheres in a compression tube. Determine the volume in dm³ occupied in the tube.

How can i find the Lewis Representation of NO3 minus in the XYLD form

Consider the element Uranium, U. Determine which isotopes are naturally occurring. Look up the masses of each isotope in amu, and the natural abundances. Calculate the average atomic weight, and compare this to what you find in the periodic table. Given the atomic mass numbers of the isotopes, is the atomic mass number consistent with these atomic mass numbers? Why or why not? If it seems inconsistent, can you explain this apparent inconsistency

A pycnometer, nominally 10 ml, was found to have a volume of 9.9872 ml, when filled

exactly to the top of the capillary in the stopper. The pycnometer was filled with benzene

(an organic liquid), and weighed. The mass of the filled pycnometer was found to be

21.8743 g. The pycnometer empty was weighed, and found to have a mass of 13.1455 g.

Calculate the density of the benzene. Compare this to the density of benzene at 25.0 0C

that you find in the literature

how many nitrogen molecules are in a box measuring 9.00cm H x 21.00cm L x 14.50cm W